Abstract: An organic light emitting device includes a first electrode, a hole transport region provided on the first electrode, an emission layer provided on the hole transport region, an electron transport region provided on the emission layer, and a second electrode provided on the electron transport region. The electron transport region includes an electron transport layer provided on the emission layer, a first mixed electron transport layer provided on the electron transport layer, and a second mixed electron transport layer provided on the first mixed electron transport layer. The first mixed electron transport layer includes a first electron transport compound and a second electron transport compound different from the first electron transport compound mixed at a first ratio. The second mixed electron transport layer includes the first electron transport compound and the second electron transport compound mixed at a second ratio different from the first ratio.

Abstract: A compound represented by formula (1): wherein R1 to R6, R7 to R10, R11 to R14, R15 to R18, L1, L2, Ar1, and Ar2 are as defined in the description realizes an organic electroluminescence device with long lifetime.

Abstract: A fused aromatic derivative shown by the following formula (1): wherein Ra and Rb are independently a hydrogen atom or a substituent, p is an integer of 1 to 8 and q is an integer of 1 to 11, and when p and q are two or more, Ras and Rbs may be independently the same or different, and adjacent substituents Ras may form a ring, L1 is a single bond or a substituted or unsubstituted divalent linking group, and Ar1 is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 5 to 50 ring atoms, provided that when L1 is a single bond and at least one of Ras is not a hydrogen atom, Ar1 is not a triphenylenyl group, and provided that substituents of L1 and Ar1, and Ra and Rb contain no amino group.

Abstract: An organic electroluminescent (EL) material and an organic EL device, the material being represented by the following Formula 1:

Abstract: A compound is represented by Formula 1 or Formula 2, and an organic light-emitting device includes the same.

Abstract: A novel compound according to the present invention may improve the capability of transporting electrons to a light-emitting layer in a light-emitting device, and may improve the light-emitting efficiency and increase the lifespan of the light-emitting device by using the compound.

Abstract: A compound represented by formula (1): wherein R1 to R6, R7 to R10, R11 to R14, R15 to R18, L1, L2, Ar1, and Ar2 are as defined in the description realizes an organic electroluminescence device with long lifetime.

Abstract: A novel compound for improving the hole injection and transport properties in a light emitting device, a light emitting device including the compound, and an electronic device including a light emitting device are provided.

Abstract: One objective of the present invention is to provide an organic EL element which is suppressed in change in the resistance of a light emitting layer after passing a current therethrough for a long period of time, thereby having good emission spectrum chromaticity, and which is suppressed in change in the emission characteristics over time. Another objective of the present invention is to provide a lighting device and a display device, each of which uses the organic EL element. An organic electroluminescent element of the present invention is provided with a pair of electrodes and one or more organic layers that are arranged between the pair of electrodes, and is characterized in that one or more layers among the organic layers contain a compound that has a structure represented by general formula (1).

Abstract: An organic electroluminescence device includes an anode, a cathode, and an emitting layer, in which the emitting layer contains a first compound, a second compound, and a third compound, a singlet energy S(M1) of the first compound and a singlet energy S(M2) of the second compound satisfy a numerical formula (Numerical Formula 1) below, an electron affinity Af(M1) of the first compound and an electron affinity Af(M2) of the second compound satisfy a numerical formula (Numerical Formula 2) below, and a triplet energy T(M1) of the first compound satisfies a numerical formula (Numerical Formula 3) below, S(M2)?S(M1)×0.95??(Numerical Formula 1) Af (M2)?Af(M1)?0.2eV??(Numerical Formula 2) T(M1)?2.0eV??(Numerical Formula 3).

Abstract: An aromatic amine derivative is represented by a formula (1) below. In the formula (1), R2 to R5, R7 to R9 and R10 are each independently a hydrogen atom or a substituent. In the formula (1), R1 and R6 are represented by a formula (2) below, and L1 to L3 are each independently a single bond and the like. In the formula (2), Ar1 is a monovalent residue derived from the ring structure represented by a formula (4) below, X is an oxygen atom or a sulfur atom, and at least one of R11 to R18 is an alkyl group. In the formula (1), Ar2 is an aryl group or a monovalent residue derived from the ring structure represented by the formula (4).

Abstract: Provided is a light-emitting element with high emission efficiency. The light-emitting element including a first electrode, a second electrode, and a layer containing an organic compound between the first electrode and the second electrode. The layer containing the organic compound includes a light-emitting layer at least containing a first organic compound, a second organic compound, and a fluorescent substance. The first organic compound has an electron-transport property. The second organic compound has a hole-transport property. The second organic compound has a triarylamine skeleton. At least one of three aryl groups in the triarylamine skeleton is a group including a p-biphenyl skeleton.

Abstract: A compound, an organic light-emitting device including the compound, and a display apparatus including the organic light-emitting device, the compound being represented by the following Formula 1:

Abstract: Provided is an organic light emitting element including: an anode; a cathode; and an organic compound layer formed between the anode and the cathode and including a hole injection layer, a hole transport layer, and an emission layer, in which: the emission layer includes a host and a dopant; the hole transport layer includes a hole transport material having multiple aromatic hydrocarbon skeletons and a single bond for linking the aromatic hydrocarbon skeletons; the hole transport material has a triplet level T1 of 1.8 eV or more; the hole transport material has a hole mobility of 1×10?5 cm2/Vs or more; and the hole transport layer and the emission layer satisfy relationships represented by the following expression (1): |reduction potential of hole transport material|?|reduction potential of host|>0.1 V??(1) and the following expression (2): |HOMO level of hole transport material?HOMO level of host|<0.1 eV??(2).

Abstract: The present invention relates to compounds of the formula (1) and (2) which are suitable for use in electronic devices, in particular organic electroluminescent devices.

Abstract: This disclosure relates to compounds for use in light-emitting devices are described herein. These compounds may include a biphenyl that includes four substituents, such as benzoxazolyl, benzothiazolyl, or benzimidazolyl substituents, such as a compound represented by Formula 1. These compounds can incorporated into a nanostructure material or a plurality of nanostructures, which can be useful for light-scattering or light-extraction, for example, to increase the efficiency of light-emitting devices.

Abstract: Provided is an organic light emitting element that has high moisture resistance, is driven at a low voltage, has high efficiency, and has a long lifetime. Specifically, provided is an organic light emitting element, including: an anode; a cathode; and an organic compound layer arranged between the anode and the cathode, in which: the organic compound layer includes an organic functional layer; and the organic functional layer contains an organic compound represented by the following general formula [1].

Abstract: Disclosed herein are a compound represented by formula (1) that is capable of producing organic electroluminescence (EL) devices having excellent properties, an organic EL device containing the compound, and an electronic device containing the organic EL device. The organic EL device contains a organic thin film layer between a cathode and an anode, in which the organic thin film layer contains one or more layers and a light emitting layer, and at least one layer of the organic thin film layer contains the compound.

Abstract: Optionally substituted 3-(10-(aryl)anthracen-9-yl)-5-(10-(aryl)anthracen-9-yl)pyridine compounds may be used as host compounds for devices such as organic light-emitting devices.

Abstract: An aromatic amine derivative represented by the following formula (1): wherein at least one of R1 to R8 is a group other than a hydrogen atom, Ar1 to Ar4 are a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms.